Force-feed oil-cup



J. W.`DO0LITTLE.

FORCE FEED OIL CUP.

APPLICATION FlLED No,\|.2a.r19|9.

Patented Nov. 23, 1920.v

um Y

n l 1 l UNITED slmrarssr ortica.

JAMES W. DooLrrfrLE, or s'r'arlrroan, coimnorrour 515i f* Foncia-FEED ort-CUP.

T yall 'whom may concern:

Be 1t known that I, JAMES W. DooLrrrLn,

, a citizen of the United States, residing at 93 Grrovey St., Stamford, county of Fairfield, State of Connecticut, have invented an vImprovement in Force-Feed Oil-Cups, of which the following is a specification.

`This invention has for its object to provide a force feed oil cup, theparts of which may be secured together by a single operation of a press, which shall have no removable parts,

which may be produced at much less expense Y than any oil cup now known to the trade, and whichshall be equal to or superior in VVits operation to the various more expensive ty es of oil cups now in use.

ith these and other objects in view I have Vdevised the novel structure which I will now describe referring to the accompanying` drawing forming a part of this specification and using reference characters to indicate the several parts.

Figure 1 is an elevation of my novel force feed oil cup as in use;

Y Fig. 2 a longitudinal section theredf show- -inO the piston down, and

ig. 3 is a disassembled view of the parts.

10 denotes the hub of my novel oil cup, 11

the reservoir, and 12 the cap. The hub is provided with a longitudinal hole 13 and with-a male thread 14 for attachment to a bearing. The reservoir is drawn to cup shape from sheet metal and is provided with a hole 15 in its bottom to receive the upper end of the hub, the metal surrounding the hole vresting against a shoulder on the hub and the parts being *rigidlyV and permanently secured together by heading down the upper end of the hub, as at 16. The reservoir is provided near its upper end with an oil hole 17. The upper end of the reservoir'is provided with slots extending downward for a short distance leaving tongues 18 between them.

The cap is drawnv to cup shape from sheet metal leaving a curve, as at 25, at the inter` section of the side and base, and fits the out-V side of the reservoir with a slide tit, so that the slight amount of oil which is unavoidable between the reservoir and the cap will make the reservoir-not only dust tight but practically air tight. The piston Ycomprises a anged leather washer 19 which lies between metallic washers 20 and 21 and is rigidly secured to the lower end of the piston rod 22. The end of the piston rod is passed Y l l Specification of Letters IgPatent. Fatnted Nov. 23, 1192i).4

Application ltiled November k28, 191.9,v Serial No. 840,967.

through holes in the three washers, theupper4 was ier resting against a shoulder on the rod, andthe rod being` headed as at 28 toy securer the parts of the piston rigidly thereto. The upper end of the piston rod is shouldered in the same manner, is passed through a central hole in the base ofthe cap, the cap resting against the shoulder,.and the piston rod and Y Vplaced in a press and the reservoir and ycap forced inward relatively to each other, the effect of which is, through the engagement of the tongues atthe outer end of the reser-` voir with curve 25 of theV cap, to curve the tongues over inward, as clearly shown in F ig. 2, thereby locking the cap permanently to the reservoir but leaving the cap free to be moved longitudinally. The locking is effected through the engagement of the piston when it is drawn outward with the in# wardly curved tongues on the reservoir which render it practically impossible to separate the cap from the reservoir.

rIhe operation will be obvious from the drawing and description. To fill the reservoir, the cap is drawn outward to the limit ofy its movement which leaves oil hole 17 uncovered. The reservoir is partly or wholly filledV through the oil hole and then the cap vis pressed downward to force the oil into the bearing to which the structure is attached. Y

It will be seen from, the foregoing that I have devised an oil cup havinga cap which v is free to slide up and down upon the application of pressure by hand, but is not in any manner interfered with by any spring action; in fact I eliminate the spring altogether. the cap and piston being positioned by, and receiving their set from, the hand only. This is a much more satisfactory proposition, as constructed 'on such a basis the feed of the oil will be in the quantities required and at the time desired, and the oil in my structure will not be constantly subjected to a pressure and be feeding forward when it is not necessary. Y

Having thus described my invention, I claim:

1. An oil cup comprising a reservoir, a

Vfree sliding hand pressed and set capv con-` structed so as to slide over the reservoir, a piston having a rod i-Xedly secured to the cap, and means formed integral with the upper edge of the reservoir for providinga lock between said reservoir and the cup after they have been assembled. y

2. An oil cup comprising a reservoir having tongues at its outer end, a free sliding hand pressed cap adapted to slide over the reservoir and a piston having a rod secured to the cap, said tongues being turned inward after assembling into position to be engaged by the piston when drawn outward, whereby detachment of the cap 'from the reservoir is 15 prevented. Y

3. An oil cup embodying a reservoir having a centrally positioned exit at the bottom and tongues at its u per end, a free sliding hand pressed cap adapted to slide over the reservoir, and a. piston xedly secured tothe Y cap by a suitable piston rod, said tongues be- Y lng curved inward into position to be en? gaged by the piston when drawn outward.

'In testimony whereof I ax my signature. 25

JAMES w. DooLITirLE: 

